Prolonged exposure to high, inspired fractions of oxygen
damages the retina. In preterm infants, the developing retina is
not fully vascularized and supplemental oxygen is a risk factor,
although not the main risk factor, for the development of
retinopathy of prematurity [30,31]. In retinopathy of prematurity
the development of the retinal vessels is first arrested and then
proceeds abnormally with the associated growth of fibrous tissue.
Restricting oxygen use does not necessarily reduce the rate of
retinopathy of prematurity and may raise the risk of hypoxicrelated
complications.
In adult divers under hyperbaric conditions, eye damage has
also been noted. Here the mechanism of damage is different to the
damage to the developing eye in premature infants.
In some divers with prolonged exposures and frequently in
those undergoing hyperbaric oxygen therapy, hyperoxic myopia
has occurred. The myopia is attributed to an increase in the
refractive power of the lens and is usually reversible with time
[32].
OTHER ORGANS
Prolonged exposure to high, inspired fractions of oxygendamages the retina. In preterm infants, the developing retina isnot fully vascularized and supplemental oxygen is a risk factor,although not the main risk factor, for the development ofretinopathy of prematurity [30,31]. In retinopathy of prematuritythe development of the retinal vessels is first arrested and thenproceeds abnormally with the associated growth of fibrous tissue.Restricting oxygen use does not necessarily reduce the rate ofretinopathy of prematurity and may raise the risk of hypoxicrelatedcomplications.In adult divers under hyperbaric conditions, eye damage hasalso been noted. Here the mechanism of damage is different to thedamage to the developing eye in premature infants.In some divers with prolonged exposures and frequently inthose undergoing hyperbaric oxygen therapy, hyperoxic myopiahas occurred. The myopia is attributed to an increase in therefractive power of the lens and is usually reversible with time[32].OTHER ORGANS
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